Pull up bar



FIG. 1 is a front perspective view of a pull up bar showing my newdesign;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view of a pull up bar showing in open position.

Broken lines in the drawings depict portions of the pull up bar thatform no part of the claimed design.

CLAIM The ornamental design for a pull up bar, as shown and described.